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Online Tools

Free online tools · Every tool page states where your data goes

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Format

28

Format and minify JSON, XML, SQL, HTML, CSS and JavaScript online. Automatic indentation, syntax validation and exact error positions, all local.

Encoding

46

Encode and decode Base64, URLs and HTML entities, inspect JWTs, compute MD5, SHA and HMAC hashes, or run AES. Keys and content stay in your browser.

Convert

75

Convert timestamps and dates, number bases, colour formats and units, and parse cron expressions. Results update as you type, nothing uploaded.

Text

52

Diff two texts, count words, test regexes, deduplicate and sort lines, switch naming conventions, convert Chinese scripts, preview Markdown.

Generators

30

Generate UUIDs, ULIDs and NanoIDs in bulk, create QR codes, strong passwords, mock data as JSON, CSV or SQL, and lorem ipsum. All produced locally.

Web

88

Parse URLs, analyse user agents, look up HTTP status codes, MIME types, DNS records and WHOIS, and generate .gitignore files. No sign-up, no upload.

Images

29

Compress images, convert formats, add watermarks, slice into grids, crop ID photos, generate barcodes. All on the browser canvas, nothing uploaded.

Documents

22

Merge PDFs, split or extract pages, add page numbers and turn images into a PDF. Runs in the browser — contracts never leave your device.

Media

20

Make GIFs from video at a chosen time range, frame rate and size, or export a single frame. Convert audio to WAV, trim and add fades. Nothing uploaded.

Lookups

26

Paper sizes, zodiac years, licence plate regions, blood types, clothing sizes, dynasty timelines — the look-it-up-once tables, shipped with the page.

Styling

25

Tune the parameters, watch a live preview, copy the CSS: gradients, radius, glass, neumorphism, neon, keyframes, Flexbox. Ready to paste into a stylesheet.

Games

12

Minecraft coords, stacks, ticks and colour codes; OSRS XP and combat; Stardew crop profit; Satisfactory belts; plus KDA and a scoreboard. All local.

Popular tools

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JSON Formatter

Format

Format, validate and minify JSON in a collapsible tree with syntax highlighting and line numbers. Search, edit, delete or convert to Python dicts.

Timestamp Converter

Convert

Convert Unix timestamps into dates and back, telling seconds, milliseconds, microseconds and nanoseconds apart, with Windows FILETIME and decimals.

Password Generator

Generators

Generate strong random passwords with a live entropy readout, so strength becomes a number you can compare. Passwords stay in memory, never uploaded.

QR Code

Generators

Generate QR codes for text, links, WiFi, contact cards or calendar events, with adjustable colours, downloadable as PNG or vector SVG.

Unit Converter

Convert

Convert between 26 categories of units — length, weight, temperature, energy, pressure, flow, force, density and more. All in your browser.

Image to Base64

Web

Convert an image to Base64 or a data URL by dropping, choosing or pasting it. Resize and switch format, all locally — nothing is ever uploaded.

piapia123 collects everyday tools for formatting, encoding and crypto, conversion, text processing, generators and web lookups — useful for writing, office work, studying and building. No install, no account. Every tool page states below its heading where the data goes: tools that run locally in your browser never send your input anywhere; the ones that query the network (DNS and WHOIS) say so, and send only the target you enter to the relevant public service — never through this site’s servers.